All Implemented Interfaces:

it.unibo.alchemist.model.Actionable , it.unibo.alchemist.model.Reaction , java.io.Serializable , java.lang.Comparable
```
public final class SAPEREGradient<P extends Position<P>>
extends AbstractReaction<T>
                    
```
This class provides a fast and stable gradient implementation, inspired on the NBR construct used in Proto.

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description

Field Summary

Fields
Modifier and Type	Field	Description
`public final TimeDistribution<T>`	`timeDistribution`
`public final Node<T>`	`node`

Constructor Summary

Constructors
Constructor	Description
`SAPEREGradient(Environment<List<ILsaMolecule>, P> environment, ILsaNode node, ILsaMolecule sourceTemplate, ILsaMolecule gradientTemplate, int valuePosition, String expression, ILsaMolecule contextTemplate, double gradThreshold, TimeDistribution<List<ILsaMolecule>> timeDistribution)`	Builds a new SAPERE Gradient.
`SAPEREGradient(Environment<List<ILsaMolecule>, P> environment, ILsaNode node, TimeDistribution<List<ILsaMolecule>> timeDistribution, String sourceTemplate, String gradientTemplate, int valuePosition, String expression, String contextTemplate, double gradThreshold)`	Builds a new SAPERE Gradient.

Enum Constant Summary

Enum Constants
Enum Constant	Description

Method Summary

Modifier and Type	Method	Description
`boolean`	`canExecute()`
`Reaction<List<ILsaMolecule>>`	`cloneOnNewNode(@Nonnull() Node<List<ILsaMolecule>> node, @Nonnull() Time currentTime)`
`void`	`execute()`
`List<Action<List<ILsaMolecule>>>`	`getActions()`
`List<Condition<List<ILsaMolecule>>>`	`getConditions()`
`ILsaNode`	`getLsaNode()`
`double`	`getRate()`

Methods inherited from class it.unibo.alchemist.model.reactions.AbstractReaction
compareTo, equals, getInboundDependencies, getInputContext, getNode, getOutboundDependencies, getOutputContext, getTau, getTimeDistribution, hashCode, initializationComplete, setActions, setConditions, toString, update
Methods inherited from class it.unibo.alchemist.model.Actionable
getInboundDependencies, getOutboundDependencies
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - SAPEREGradient
```
SAPEREGradient(Environment<List<ILsaMolecule>, P> environment, ILsaNode node, ILsaMolecule sourceTemplate, ILsaMolecule gradientTemplate, int valuePosition, String expression, ILsaMolecule contextTemplate, double gradThreshold, TimeDistribution<List<ILsaMolecule>> timeDistribution)
```
    Builds a new SAPERE Gradient.
    
    Parameters:
    
    environment - the current environment
    
    node - the node where this reaction is scheduled
    
    sourceTemplate - a template ILsaMolecule representing the source
    
    gradientTemplate - a template ILsaMolecule representing the gradient.
    
    valuePosition - the point at which the computation of the new values should be inserted.
    
    expression - the expression to use in order to calculate the new gradient value.
    
    contextTemplate - a template ILsaMolecule.
    
    gradThreshold - if the value of the gradient grows above this threshold, the gradient evaporates
    
    timeDistribution - Markovian Rate
  - SAPEREGradient
```
SAPEREGradient(Environment<List<ILsaMolecule>, P> environment, ILsaNode node, TimeDistribution<List<ILsaMolecule>> timeDistribution, String sourceTemplate, String gradientTemplate, int valuePosition, String expression, String contextTemplate, double gradThreshold)
```
    Builds a new SAPERE Gradient.
    
    Parameters:
    
    environment - the current environment
    
    node - the node where this reaction is scheduled
    
    timeDistribution - Markovian Rate
    
    sourceTemplate - a template ILsaMolecule representing the source
    
    gradientTemplate - a template ILsaMolecule representing the gradient.
    
    valuePosition - the point at which the computation of the new values should be inserted.
    
    expression - the expression to use in order to calculate the new gradient value.
    
    contextTemplate - a template ILsaMolecule.
    
    gradThreshold - if the value of the gradient grows above this threshold, the gradient evaporates
- Method Detail
  - canExecute
```
 boolean canExecute()
```
  - cloneOnNewNode
```
@Nonnull() Reaction<List<ILsaMolecule>> cloneOnNewNode(@Nonnull() Node<List<ILsaMolecule>> node, @Nonnull() Time currentTime)
```
  - execute
```
 void execute()
```
  - getActions
```
@Nonnull() List<Action<List<ILsaMolecule>>> getActions()
```
  - getConditions
```
@Nonnull() List<Condition<List<ILsaMolecule>>> getConditions()
```
  - getLsaNode
```
 ILsaNode getLsaNode()
```
    Returns:
    
    the current node as ILsaNode
  - getRate
```
 double getRate()
```

Class SAPEREGradient

Nested Class Summary

Field Summary

Constructor Summary

Enum Constant Summary

Method Summary

Methods inherited from class it.unibo.alchemist.model.reactions.AbstractReaction

Methods inherited from class it.unibo.alchemist.model.Actionable

Methods inherited from class java.lang.Object

Constructor Detail

SAPEREGradient

SAPEREGradient

Method Detail

canExecute

cloneOnNewNode

execute

getActions

getConditions

getLsaNode

getRate